Engine-CodesCadillac – P0852 Cadillac

P0852 Cadillac Code - Park/Neutral Position Switch Circuit High Voltage

Quick Answer

The P0852 diagnostic trouble code (DTC) for Cadillac vehicles refers to the Park/Neutral Position Switch Circuit High Voltage. Common causes include Faulty park/neutral position switch, Corroded or damaged wiring/connectors, Electrical issues in the circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0852 Cadillac indicates Park/Neutral Position Switch Circuit High Voltage.
Common causes
Common causes include Faulty park/neutral position switch, Corroded or damaged wiring/connectors, Electrical issues in the circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0852 Cadillac Description

The P0852 diagnostic trouble code (DTC) for Cadillac vehicles refers to the Park/Neutral Position Switch Circuit High Voltage. This code indicates that there is a high voltage condition detected in the circuit responsible for monitoring the position of the transmission gear selector when the vehicle is in park or neutral. The park/neutral position switch, also known as the transmission range sensor or neutral safety switch, plays a crucial role in ensuring the proper operation of the transmission and the vehicle's starting system.

OBDII Code P0852 Cadillac - Park/Neutral Position Switch Circuit High Voltage
P0852 Cadillac Code - Park/Neutral Position Switch Circuit High Voltage

Common Causes of P0852 Cadillac

  1. Faulty park/neutral position switch
  2. Corroded or damaged wiring/connectors
  3. Electrical issues in the circuit
  4. Overheating of the transmission range sensor
  5. Water damage or exposure to moisture

Symptoms of P0852 Cadillac

  1. Difficulty starting the vehicle
  2. Vehicle not starting at all
  3. Check engine light illuminated on the dashboard
  4. Transmission not shifting correctly
  5. Intermittent stalling of the engine

How to Fix P0852 Cadillac

  1. Perform a thorough diagnostic scan to retrieve the trouble code and pinpoint the exact cause of the issue.
  2. Inspect the park/neutral position switch, wiring, and connectors for any signs of damage, corrosion, or wear.
  3. Test the voltage output of the switch and the circuit to determine if it is within the specified range.
  4. Replace the park/neutral position switch if it is found to be faulty or malfunctioning.
  5. Clear the trouble code from the vehicle's computer system and test the vehicle to ensure proper operation of the transmission and starting system.

Cost to Fix P0852 Cadillac

The typical repair costs for addressing the P0852 code on a Cadillac vehicle can range from $150 to $300, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary depending on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships and lower at independent shops. For a more precise estimate, it is recommended to inquire about local rates from reputable auto repair facilities.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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